CN108571576B

CN108571576B - Actuating device

Info

Publication number: CN108571576B
Application number: CN201810199621.5A
Authority: CN
Inventors: 欧根·马卡罗夫; 埃德加·萨尔弗德; 弗洛里安·韦策尔
Original assignee: Mahle International GmbH
Current assignee: Mahle International GmbH
Priority date: 2017-03-13
Filing date: 2018-03-12
Publication date: 2022-10-25
Anticipated expiration: 2038-03-12
Also published as: CN108571576A; US20180262086A1; US10951091B2; DE102018202922A1

Abstract

The invention relates to an actuating device (1) for a mechanically actuated assembly, comprising a housing (2) having a first housing part (4) and a second housing part (5), an electric motor (6) which is arranged in the first housing part (4) and has an input shaft (10), an output shaft (11) which is rotatably mounted on at least the second housing part (5), which output shaft forms an actuating element (13) or is connected to the actuating element (13) outside the second housing part (5), and a gear (16) which connects the input shaft (10) to the output shaft (11). A convenient variant form is formed by: when the second housing part (5) is fastened to the first housing part (4) in at least two different rotational positions (DL 1, DL 2), when the output shaft (11) is arranged eccentrically on the second housing part (5), when the first housing part (4) and/or the second housing part (5) has at least one bearing point (19) for at least one additional gearwheel (20) for mounting the gearwheel (16), when in the first rotational position (DL 1) the gearwheel (16) without the respective additional gearwheel (20) has a first transmission ratio (TR 1), and when in the second rotational position (DL 2) the gearwheel (16) with the respective additional gearwheel (20) has a second transmission ratio (TR 2).

Description

Actuating device

Technical Field

The present invention relates to an actuating device for mechanically actuating an assembly.

Background

In many engineering fields, the components must be actuated mechanically. In particular in internal combustion engines or in motor vehicles, respectively, several components have to be mechanically actuated. In this context, an assembly is here preferably considered to be such as a throttle valve, an exhaust valve, a wastegate valve, a variable turbine geometry. Also, applications in the field of thermal management systems are conceivable, for example for actuation of corresponding valves.

For actuating these components, an actuating device can be used which has an electric motor in the housing, which is in driving connection with an actuating element arranged outside the housing via a gear wheel also arranged in the housing. The actuating element can now be mechanically coupled with the component to be actuated. The gears may require various gear ratios for different applications of the actuation device. In order to be able to provide different actuating devices which differ from one another by means of different transmission ratios of the gears, a relatively large logic effort is required, which is accompanied by correspondingly high costs.

Disclosure of Invention

The present invention is concerned with the problem of specifying an improved embodiment for an actuating device of the type described above, which is distinguished in particular by a reduced cost in variant form.

According to the invention, this problem is solved by the subject matter of the independent claims. Advantageous embodiments are the subject matter of the dependent claims.

The invention is based on the general idea that: the housing is divided into a first housing part and a second housing part with a separating plane, the electric motor is accommodated in the first housing part, and an output shaft which passes through a wall of the second housing part and can be connected to the actuating element outside the second housing part is mounted on the second housing part. Furthermore, the invention proposes to configure the two housing parts such that they can be fastened to one another in at least two different rotational positions relative to a rotational axis extending perpendicular to the separation plane. By the eccentric positioning of the output shaft relative to the axis of rotation, a mounting space for a gear wheel coupling the input shaft of the electric motor with the output shaft can be provided in the housing. Due to the eccentric output shaft, the installation space is dependent on the current rotational position between the housing parts. By means of the variable installation space available for accommodating the gear in the housing, different configurations can be achieved by various gear ratios of the gear, wherein a plurality of common components can be used. For example, in this variant, the housing part, the electric motor and the output shaft with the actuating element can remain unchanged. The use of common components in different variants of the actuating device reduces the manufacturing costs.

In detail, the invention proposes that the gear has an output gearwheel which is connected to the output shaft in a torque-proof manner. Furthermore, the first housing part and/or the second housing part are equipped with at least one bearing point, by means of which at least one additional gearwheel of the gearwheel can be rotatably mounted. In a first rotational position between the first and second housing part, the gearwheel connects the input shaft to the output shaft without integrating a corresponding additional gearwheel and defines a first transmission ratio here. In a second rotational position, which is different from the first rotational position, between the first and second housing parts, the gearwheel now connects the input shaft to the output shaft by integrating a corresponding additional gearwheel, and a second transmission ratio, which is different from the first transmission ratio, is defined here. In other words, for a variant of the actuating device, only a corresponding additional gearwheel is required, which in the first rotational position is not integrated into the force path leading from the input shaft to the output shaft, and which in the second rotational position is integrated into this force path. The actuation means defined by the two different gear ratios in the at least two variants presented herein are constituted by the same component parts, except for the respective additional gearwheel. Thereby, the price of the variant forms becomes particularly economical.

It is obvious that in order to be able to create variants with different transmission ratios, basically a single additional gearwheel suffices. However, embodiments are also conceivable in which two or three or more additional gearwheels can be used in order to achieve different gear ratios. It is also obvious that more than two different rotational positions can also be achieved between the two housing parts, wherein in the third rotational position a different additional gearwheel or a different number of additional gearwheels can be used compared to the second rotational position in order to set a third gear ratio which is different from the first and second gear ratios.

Such an additional gearwheel has two axially adjacent gearwheel sections with different diameters and tooth numbers so as to define gear stages in the gear.

In an advantageous embodiment, the respective additional gearwheel may not be present in the first rotational position, but rather it is present in the second rotational position. Alternatively, a corresponding additional gearwheel may also be present in the first rotational position, but positioned such that it is not integrated into the gearwheel. In this variant, the respective additional gearwheel has no effect in the first rotational position; it may rotate synchronously here, but this is not necessarily so. However, this form of construction can at any time switch the actuating means for achieving the second rotational position. In contrast, an embodiment in which the respective additional gearwheel is not present in the first rotational position is more cost-effective.

In a further development, the gear wheel can have a worm drive with a worm connected to the input shaft in a torque-proof manner. In this case, the worm drive can be designed in particular such that the electric motor is arranged horizontally in a relatively flat housing. By means of a horizontal motor, the axis of rotation of the motor extends substantially parallel to the separation plane.

In the case of a gear wheel with a worm drive, the latter can also have a worm wheel which meshes directly with the worm. Advantageously, a respective additional gearwheel, which can be arranged in the second rotational position, is integrated into the gearwheel between the worm wheel and the output gearwheel. Advantageously, the first rotational position may be such that the worm gear then directly engages with the output gearwheel. With respect to the worm drive, a larger transmission ratio can be achieved. Also, the worm drive simplifies the self-locking configuration of the drive connection between the actuating element and the deactivated electric motor.

A further embodiment, which is likewise operated by means of a worm gear, provides that the output gearwheel in the first rotational position engages directly with the worm. In this case, the output gearwheel itself forms the worm wheel. In the second rotational position, the respective additional gearwheel is then integrated into the gearwheel between the worm and the output gearwheel, so that the additional gearwheel meshes directly with the output gearwheel and/or directly with the worm. If only a single additional gearwheel is present, the latter directly meshes with both the output gearwheel and the worm.

In this preferred embodiment, at least two additional gearwheel wheels are provided, such that in the second rotational position one additional gearwheel wheel (and thus one of the additional gearwheel wheels) directly meshes with the worm and the other additional gearwheel wheel (and thus the other of the additional gearwheel wheels) directly meshes with the output gearwheel wheel. In case only two additional gearwheels are provided, these additional gearwheels directly mesh with each other. On the other hand, if there are three or more additional gearwheels, each further additional gearwheel is arranged between two of the above-mentioned additional gearwheels.

Another embodiment provides that the axes of rotation of the respective additional gearwheel and output gearwheel extend parallel to the axis of rotation, while the axis of rotation of the input shaft extends transversely to the axis of rotation. Thereby, the motor can be arranged horizontally in the housing. The housing can thus be constructed comparatively flat. With a flat construction, the smallest dimension of the housing is parallel to the axis of rotation.

An alternative embodiment is one in which the axes of rotation of the respective additional gearwheel, the output gearwheel and the input shaft extend parallel to the axis of rotation. In this case, the motor may be arranged vertically in the housing. A relatively compact design with respect to the axis of rotation is thereby achieved radially. For a vertical motor, its axis of rotation extends substantially perpendicular to the separation plane.

Generally, depending on the load of the actuating device, it is sufficient to mount the output shaft only on the second housing part. However, an embodiment in which the output shaft is rotatably mounted on the first and second housing parts is preferred. A particularly advantageous further development of this embodiment provides that the output shaft on the first housing part has a first bearing point, in which the output shaft is mounted in a first rotational position, and a second bearing point, in which the output shaft is mounted in a second rotational position. Furthermore, a further bearing point is assigned to the output shaft on the second housing part, in which bearing point the output shaft is mounted both in the first rotational position and in the second rotational position. In this way, a particularly stable mounting of the output shaft can be achieved for different rotational positions in each case. When three or more rotational positions are present, three or more bearing points can also be provided on the first housing part, while only a single bearing point is always provided on the second housing part for the output shaft.

In a further advantageous embodiment, the gear wheel may have a reversed gearwheel having three axially adjacent gearwheel sections with different diameters and numbers of teeth. The three gearwheel sections here form an input gearwheel section, a first output gearwheel section and a second output gearwheel section. The input gearwheel part is here arranged axially between the first output gearwheel part and the second output gearwheel part. Furthermore, in this embodiment it is provided that in the first rotational position the reversing gearwheel is integrated into the gearwheel in the first reversing position, wherein preferably the output gearwheel partially meshes directly with the first output gearwheel. In the second rotational position, on the other hand, the reversing gearwheel is integrated into the gearwheel in a second reversing position, which is opposite to the first reversing position. Preferably, the output gearwheel then meshes directly with a first gearwheel part of the respective additional gearwheel, while a second output gearwheel part of the reverse gearwheel meshes directly with a second gearwheel part of the same or of another additional gearwheel. The reversal of the reversing gearwheel takes place by rotation of the reversing gearwheel about a reversing axis extending parallel to the separation plane. By the use of such a counter-rotating gearwheel, the transmission ratio can be changed considerably for the variant forms, wherein in both variants the counter-rotating gearwheel can be used, which increases the number of common parts and reduces the costs of the variant forms.

According to a further development, the gearwheel can again have a worm drive, wherein the input gearwheel sections of the reversing gearwheel in the first reversing position and in the second reversing position respectively directly engage with the worm. The variant in connection with the worm drive is thereby particularly simple.

A further embodiment provides that a rotational position sensor is attached to the first housing part, which rotational position sensor determines the current rotational position of the input shaft. By the positioning of the input shaft, the current rotational position of the output shaft and thus of the actuating element can also always be determined by the existing mechanical coupling between the input shaft and the output shaft.

In a further embodiment, which can be realized alternatively or additionally, a rotational position sensor can be attached to the second housing part, which rotational position sensor determines the current rotational position of the output shaft. The current rotational position of the output shaft and thus the rotational position of the actuating element can thus be determined directly or respectively more precisely.

Furthermore, power electronics for the supply and starting of the electric motor can be arranged in the housing. The power electronics can be electrically or electronically coupled to the respective rotary position sensor. In the case of using only one rotary position sensor, the power electronics are advantageously accommodated in the same housing part in which the rotary position sensor is also located.

Each of the torque-resistant couplings mentioned above and to be mentioned below is advantageously configured as an indirect or direct rotary coupling. For example, the respective rotary connections can be formed by direct fixing of the rotationally connected components to one another, in particular by form-fitting, friction-fitting or material bonding. Also, a coupling may be included in the rotational connection. In addition, the respective rotational connection may be independent of the direction of rotation, or, for example, in combination with a flywheel, may depend on the direction of rotation.

Further important features and advantages of the invention will emerge from the dependent claims, the figures and the associated drawing description with the aid of the figures.

It is to be understood that the features mentioned above and those yet to be explained below can be used not only in the respective combinations indicated, but also in other combinations or alone without departing from the scope of the present invention.

Drawings

Preferred exemplary embodiments of the invention are shown in the drawings and are further explained in the following description, wherein the same reference numerals indicate identical or similar or functionally identical components.

Which are shown in each case schematically and in each case,

figure 1 is a highly simplified view in schematic form of an actuating device in a first rotational position,

fig. 2 is a view of the actuating means as in fig. 1, but in a second rotational position,

fig. 3 is a view as in fig. 1, but in a first rotational position in another embodiment of the actuating means,

fig. 4 is a view of the actuator as in fig. 3, but in a second rotational position,

fig. 5 is another view of the actuator, but in another embodiment,

figure 6 is an isometric view of an actuation device in another embodiment in a first rotational position in the gear area,

fig. 7 is an isometric view of the actuation device in the gear area as in fig. 6, but in a second rotational position,

fig. 8 is an isometric view of a reverse bull gear of the gear.

Detailed Description

According to fig. 1 to 5, an actuating device 1 that can be used for the mechanical actuation of components not shown here comprises a housing 2. The housing 2 is divided by a separating plane 3, which can be seen only in fig. 5 and which extends parallel to the plane of the drawing in fig. 1 to 4, so that it has a first housing part 4 and a second housing part 5. Other housing parts are not excluded thereby. However, the preferred embodiment is that the housing 2 is formed only from the two

housing parts

4, 5. In fig. 1 to 4, the first case member 4 and the second case member 5 are arranged one above the other in the viewing direction. For better presentation, the housing part facing the viewer is shown here for easy understanding. In any case, the two

housing parts

4, 5 bear against one another in the separating plane 3. In addition, the two

housing parts

4, 5 are fastened to one another in a suitable manner. However, a suitable fastening means is not described herein.

The actuating device 1 furthermore has an electric motor which, in a conventional manner, has a stator 7 and a rotor 8 with a rotor shaft 9. A rotor shaft 9 is axially led out from the stator 7 and forms an input shaft 10 of the electric motor 6. The motor 6 is arranged in the first housing part 4. This means that the electric motor 6 is fixed to the first housing part 4. In particular, a mounting position is formed in the first housing part 4 for receiving the electric motor 6. It is obvious that the electric motor 6 can also project into the second housing part 5 in the assembled state of the housing 2.

Furthermore, the actuating device 1 is equipped with an output shaft 11 which is rotatably mounted on the second housing part 5. Furthermore, the output shaft 11 passes through a wall 12 of the second housing part 5 facing the viewer in fig. 1 and 4. Outside the second housing part 5, the output shaft 11 can be connected in a torque-proof manner to an actuating element 13 indicated in fig. 5. The actuating element 13 is then used for mechanical coupling with the component to be actuated. For example, the actuating element 13 has a lever arm 14 connected to the output shaft 11 in a torque-proof manner and a pin 15 arranged eccentrically on the lever arm 14 on the output shaft 11. Via the pin 15, the actual coupling with the components to be separately actuated can be achieved.

Furthermore, the actuating device 1 has a gear 16 in the housing 2, which mechanically connects the input shaft 10 with the output shaft 11. The gear 16 comprises an output gearwheel 17 which is connected in a torque-proof manner to the output shaft 11.

The first housing part 4 and the second housing part 5 are arranged rotationally symmetrically with respect to the axis of rotation. The axis of rotation 18 lies vertically on the separation plane 3 and thus on the plane of the figures of fig. 1 to 4. In the example of fig. 1 to 4, the housing 2 has a substantially square cross section perpendicular to the axis of rotation 18, wherein in fig. 1 and 2 rounded corners are provided. A total of four rotational positions of the two

housing parts

4, 5 thus results, wherein the two

housing parts

4, 5 can be placed on one another in axial alignment and thus parallel to the axis of rotation 18. The second housing part 5 is arranged to be securable to the first housing part 4 in at least two different rotational positions relative to the axis of rotation 18. In fig. 1 and 3, respectively, a first rotational position DL1 is shown, while fig. 2 and 4 show a second rotational position DL2. By means of the housing 2 having a square cross section in the separating plane 3, basically four different rotational positions can be achieved between the two

housing parts

4, 5. Other rotationally symmetrical cross sections for the housing 2 are also basically conceivable, such as for example in the form of an isosceles triangle or a regular pentagon or a polygon. Also, for example, an elliptical cross section enables two different rotational positions. On the other hand, a circular cross-section enables virtually any desired number of rotational positions.

The output shaft 11 is eccentric with respect to the rotation axis 18 and is therefore arranged at a radial distance. By changing the rotational position between the two

housing parts

4, 5, the available installation space for the gear wheel 16 in the housing 2 can be changed due to the eccentric output shaft 11, since the output shaft 11 changes its relative position with respect to the output shaft 10 when the second housing part 5 is rotated relative to the first housing part 4.

The first housing part 4 and/or the second housing part 5 have at least one bearing point 19, indicated only in fig. 5, for the rotational bearing of at least one additional gearwheel 20 of the gearwheel 16. In the example of fig. 5, both the first housing part 4 and the second housing part 5 each have at least one such bearing point 19 for at least one such additional gearwheel 20.

The

housing parts

4, 5 now cooperate with one another in such a way that, in the first rotational position DL1 according to fig. 1 and 3, the gearwheel 16 connects the input shaft 10 with the output shaft 11 without the additional gearwheel 20 or without the corresponding additional gearwheel 20, respectively, and thus a first transmission ratio TR1 is achieved. In a second rotational position DL2 shown in fig. 2 and 4, the gearwheel 16 now connects the input shaft 10 with the output shaft 11 together with the respective additional gearwheel 20, whereby a second transmission ratio TR2 is achieved, which is different from the first transmission ratio TR1. In the second rotational position DL2, the respective additional gearwheel 20 thus forms part of the active component of the gearwheel 16 in order to produce the second transmission ratio TR2.

The design proposed here is preferred, since the respective additional gearwheel 20 is not present in the first rotational position DL1, but only in the second rotational position DL2. An embodiment is also conceivable in which a corresponding additional gearwheel 20 is also present in the first rotational position DL1, but is not yet actively integrated there in the gearwheel 16. Then the respective additional gearwheel 20 is inactive or inactive in relation to the first transmission ratio TR1 in the first rotational position DL 1.

In the embodiments of fig. 1 to 4, 6 and 7, the gear wheel 16 is equipped with a worm drive 21. The worm drive 21 has a worm 22 which is connected to the input shaft 10 in a torque-proof manner. In the example of fig. 1 and 2, the worm drive 21 also has a worm wheel 23 which directly meshes with the worm 22. In the first rotational position DL1 according to fig. 1, the worm wheel 23 is directly in mesh with the output gearwheel 17. In contrast, in the second rotational position DL2 according to fig. 2, the respective additional gearwheel 20 is integrated into the gearwheel 16 between the worm wheel 23 and the output gearwheel 17. In the example provided here, exactly two additional gearwheels 20 are provided in order to achieve a particularly high second transmission ratio TR2.

In the example of fig. 3 and 4, no separate worm wheel 23 is provided, but rather the output gearwheel 17 or the respective additional gearwheel 20 can serve here as a worm wheel and mesh with the worm 22. In detail, in the first rotational position DL1 according to fig. 3, a direct meshing is provided between the output gearwheel 17 and the worm 22, whereas in the second rotational position DL2 according to fig. 4, the respective additional gearwheel 20 is integrated into the gearwheel 16 between the worm 22 and the output gearwheel 17. In the example of fig. 4, exactly two additional gearwheels 20 are provided. In the second rotational position DL2, one or the first additional gearwheel 20' meshes directly with the worm 22, while the other or the second additional gearwheel 20 "meshes directly with the output gearwheel 17. The two additional gearwheels 20', 20 ″ engage directly with one another here. In case three or more additional gearwheels 20 are provided, these may be integrated in the gear 16 in a suitable manner between the first additional gearwheel 20' and the second additional gearwheel 20 ".

The content relating to fig. 3 shows the actuation device 1 with the housing 2 in a first rotational position DL1, in which the gear wheel 16 has a first transmission ratio TR1. The constellation of fig. 4 shows the actuation device 1 with the housing 2 in a second rotational position DL2, wherein the gear wheel 16 has a second gear ratio TR2. To simplify the description of fig. 4, the two additional gearwheels 20' and 20 "and the output gearwheel 17 are depicted as having the same diameter and therefore the same number of teeth. It is obvious to a person skilled in the art that at least one of the output gearwheel 17 and the additional gearwheel 20', 20 "must have different diameters and numbers of teeth in order to achieve different transmission ratios TR1 and TR2 of the gearwheel 16 in the two constellations of fig. 3 and 4. In addition, the two additional gearwheels 20', 20 "can also have different diameters and numbers of teeth.

In the embodiment of fig. 3 and 4, the two additional gearwheels 20', 20 "are realized as a single gearwheel having only a single gearwheel part which forms the input gearwheel part and at the same time the output gearwheel part. In contrast, fig. 1 and 2 depict an embodiment in which the two additional gearwheel 20 as well as the worm wheel 23 are realized as a double gearwheel having two axially adjacent gearwheel sections which form an input gearwheel section and a separate output gearwheel section. It is obvious that in the embodiment of fig. 3 and 4, at least one of the additional gearwheel 20', 20 "can also be realized as such a double gearwheel having two axially adjacent gearwheel parts, which form an input gearwheel part and a separate output gearwheel part.

The output shaft 11 and the output gearwheel 17 have an axis of rotation 24. The input shaft 10 has an axis of rotation 25 and the respective additional gearwheel 20 has an axis of rotation 26. The worm wheel 23, if present, has an axis of rotation 27. In the example of fig. 6 to 8, the gear 16 also has a counter-rotating gearwheel 28, the function of which is explained in further detail below. In any case, the axis of rotation 29 is likewise assigned to this counter gearwheel 28. The rotational axis 25 of the input shaft 10 simultaneously corresponds to the rotational axis 25 of the rotor shaft 9 or the rotor 8 or the electric motor 6, respectively.

In the example of fig. 1 to 4 and 6 to 8, the axes of

rotation

24, 26, 27, 29 of the output gearwheel 17, of the respective additional gearwheel 20, of the possible worm wheel 23 and of the possible reversing wheel 28 each extend parallel to the axis of rotation 18, while the axis of rotation 25 of the input shaft 10 or of the electric motor 6, respectively, extends transversely to the axis of rotation 18 and thus parallel to the separating plane 3. The electric motor 6 can thus be arranged horizontally in the housing 2, so that the dimensions of the housing 2 can be relatively small in the axial direction and thus parallel to the axis of rotation 18 and can thus be configured flat.

In contrast, fig. 5 shows an embodiment purely by way of example, in which all the axes of

rotation

24, 25, 26, 27, 29, and thus also the axis of rotation 25 of the input shaft 10 or of the electric motor 6, respectively, extend parallel to the axis of rotation 18. In this case, the motor 6 is vertically arranged in the housing 2.

In addition, for all embodiments shown here, fig. 5 shows by way of example that the output shaft 11 has a first bearing point 30 on the first housing part 4, wherein the output shaft 11 is mounted in a first rotational position DL 1. In addition, the output shaft 11 has a second bearing point 31 on the first housing part 4, wherein the output shaft 11 is mounted in the second rotational position DL2. Fig. 5 shows a second rotational position DL2, so that the output shaft 11 is mounted on the first housing part 4 in the second bearing point 31. In contrast, only one further bearing point 32 is formed for the output shaft 11 on the second housing part 5, wherein the output shaft 11 is mounted both in the first rotational position DL1 and in the second rotational position DL2.

Likewise typical for all embodiments shown here, a rotary position sensor 33 is indicated in fig. 5, by means of which the current rotary position of the output shaft 11 can be determined. The rotary position sensor 33 is for this purpose mounted or fastened on the second housing part 5. By changing the rotational position between the two

housing parts

4, 5, the relative position between the rotational position sensor 33 and the output shaft 11 remains unchanged.

Additionally or alternatively, according to fig. 5, a further rotational position sensor 34 may be provided for determining the current rotational position of the input shaft 10. The further rotational position sensor 34 is fastened to the first housing part 4 in such a way that it does not change its position relative to the input shaft 10 when the rotational position between the two

housing parts

4, 5 changes.

According to fig. 5, power electronics 35 for the supply and starting of the electric motor 6 can also be arranged in the housing 2. Which are electrically coupled to the motor 6 in a suitable manner. Furthermore, the power electronics 5 may be electrically coupled with the respective

rotary position sensor

33, 34. To the extent that only one

rotary position sensor

33, 34 is arranged in the housing 2, the power electronics 35 are accommodated in the

housing parts

4, 5, in which the respective

rotary position sensor

33, 34 is also located. Therefore, to the extent that preferably only a rotational position sensor 33 for determining the rotational position of the output shaft 11 is present, which is fixed to the second housing part 35, the power electronics 35 are likewise integrated into the second housing part 5.

According to fig. 6 to 8, the gear wheel 16 can also have the above-mentioned counter gearwheel 28. According to fig. 7 and 8, the reverse gearwheel 28 has three axially adjacent gearwheel sections that differ from each other with different diameters and different numbers of teeth. The three bull gear sections define an input bull gear section 36, a first output bull gear section 37 and a second output bull gear section 38. The input gearwheel part 36 is here arranged axially between two

output gearwheel parts

37, 38. In the first rotational position DL1 shown in fig. 6, the reversing gearwheel 28 is located in the first reversing position WS1 and is thus integrated into the gearwheel 16, so that the output gearwheel 17 directly meshes with the first output gearwheel part 37. In a second rotational position DL2 shown in fig. 7, the reversing gearwheel 28 occupies a second reversing position WS2 and is integrated into the gearwheel 16 in this second reversing position WS2, so that the output gearwheel 17 now meshes directly with the first gearwheel part 39 of the additional gearwheel 20, while the second output gearwheel part 38 of the reversing gearwheel 28 meshes directly with the second gearwheel part 40 of the additional gearwheel 20. To the extent that only a single additional gearwheel 20 is provided here, the second output gearwheel part 38 meshes with the second additional gearwheel part 40 of the same additional gearwheel 20. On the other hand, if two or more additional bull gears 20 are provided, the second output bull gear portion 28 meshes with a second bull gear portion 40 of another additional bull gear 20.

As mentioned, also in the configuration of fig. 6 to 8, the gear wheel 16 has a worm drive 21 in which a worm 22 is firmly mounted on the input shaft 10. In the example shown, the input gearwheel part 36 of the reversing gearwheel 28 directly meshes with the worm 22 in the first reversing position WS1 (and thus in the first rotational position DL 1) and also in the second reversing position WS2 (and thus in the second rotational position DL 2).

As can be seen, the two reversal positions WS1 and WS2 of the reversing gearwheel 28 differ from one another in that the reversing gearwheel 28 is rotated by 180 ° about a reversal axis which passes vertically through the axis of rotation 29 of the reversing gearwheel 28. Since the axis of rotation 29 extends perpendicularly to the separation plane 3, the axis of inversion extends parallel to the separation plane 3.

Claims

1. An actuation device for mechanically actuating an assembly, comprising:

-a housing (2) having a first housing part (4) and a second housing part (5) which abut each other in a separation plane (3) and are fastened to each other,

-an electric motor (6) arranged in the first housing part (4) and having an input shaft (10),

-an output shaft (11) rotatably mounted on at least the second housing part (5), which output shaft passes through a wall (12) of the second housing part (5) and which output shaft is connected outside the second housing part (5) with an actuating element (13) for mechanical coupling with the component to be actuated or itself forms an actuating element (13) for mechanical coupling with the component to be actuated,

-a gear (16) connecting the input shaft (10) with the output shaft (11) and having an output gearwheel (17) rotatably connected with the output shaft (11),

-wherein the second housing part (5) is fastenable to the first housing part (4) at least in two different rotational positions (DL 1, DL 2) with respect to a first rotational axis (18) extending perpendicular to the separation plane (3),

-wherein the output shaft (11) is arranged eccentrically on the second housing part (5) with respect to the first axis of rotation (18),

-wherein the first housing part (4) and/or the second housing part (5) has at least one bearing point (19) for the rotary bearing of at least one additional gearwheel (20) of the gearwheel (16),

-wherein in a first rotational position (DL 1) between the first housing part (4) and the second housing part (5), the gearwheel (16) without the respective additional gearwheel (20) connects the input shaft (10) with the output shaft (11) with a first gear ratio (TR 1),

-wherein, in a second rotational position (DL 2) between the first housing part (4) and the second housing part (5) different from the first rotational position (DL 1), the gearwheel (16) with the respective additional gearwheel (20) connects the input shaft (10) with the output shaft (11) by a second transmission ratio (TR 2) different from the first transmission ratio (TR 1);

the axes of rotation (24, 26) of the respective additional gearwheel (20) and output gearwheel (17) extend parallel to the first axis of rotation (18), while the axis of rotation (25) of the input shaft (10) extends transversely to the first axis of rotation (18).

2. The actuating device of claim 1, wherein the actuating device,

it is characterized in that the preparation method is characterized in that,

-the respective additional gearwheel (20) is not present in the first rotational position (DL 1) but present in the second rotational position (DL 2), or

-said respective additional gearwheel (20) is present in said first rotational position (DL 1) but not integrated into said gearwheel (16), while it is integrated into said gearwheel (16) in said second rotational position (DL 2).

3. The actuating device of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

-the gear (16) has a worm drive (21) with a worm (22) rotatably connected with the input shaft (10) and a worm wheel (23) directly meshing with the worm (22),

-the respective additional gearwheel (20) in the second rotational position (DL 2) is integrated into the gear wheel (16) between the worm gear (23) and the output gearwheel (17).

4. The actuating device as set forth in claim 3,

it is characterized in that the preparation method is characterized in that,

-the worm gear (23) in the first rotational position (DL 1) is directly meshed with the output gearwheel (17).

5. The actuating device of claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

-the gear (16) has a worm drive (21) with a worm (22) rotatably connected with the input shaft (10),

-the output gearwheel (17) in the first rotational position (DL 1) directly meshes with the worm (22),

-a respective additional gearwheel (20) in the second rotational position (DL 2) is integrated into the gear (16) between the worm (22) and the output gearwheel (17).

6. The actuating device as set forth in claim 5,

it is characterized in that the preparation method is characterized in that,

-providing at least two additional gearwheels (20),

-in the second rotational position (DL 2), one additional gearwheel (20') meshes directly with the worm (22) and the other additional gearwheel (20 ") meshes directly with the output gearwheel (17).

7. The actuating device of claim 1, wherein the actuating device,

it is characterized in that the preparation method is characterized in that,

-the output shaft (11) is rotatably mounted on the first housing part (4) and the second housing part (5),

-the output shaft (11) has a first bearing point (30) in which the output shaft (11) is mounted in the first rotational position (DL 1) and a second bearing point (31) on the first housing part (4) in which the output shaft (11) is mounted in the second rotational position (DL 2),

-the output shaft (11) has a third bearing point (32) on the second housing part (5), in which third bearing point the output shaft (11) is mounted in the first rotational position (DL 1) and the second rotational position (DL 2).

8. The actuating device of claim 1, wherein the actuating device,

it is characterized in that the preparation method is characterized in that,

-the gear (16) has a reverse gearwheel (28) with three axially adjacent gearwheel sections (36, 37, 38) that differ from each other with different diameters and different numbers of teeth, forming an input gearwheel section (36), a first output gearwheel section (37) and a second output gearwheel section (38),

-the input gearwheel part (36) is arranged axially between the first output gearwheel part (37) and the second output gearwheel part (38),

-in the first rotational position (DL 1), the reversing gearwheel (28) is integrated into the gearwheel (16) in a first reversing position (WS 1),

-in said second rotation position (DL 2), said counter-rotating gearwheel (28) is integrated into said gear wheel (16) in a second counter-rotating position (WS 2) opposite to said first counter-rotating position (WS 1).

9. The actuating device as set forth in claim 8,

it is characterized in that the preparation method is characterized in that,

-in the first rotational position (DL 1), the output gearwheel (17) directly meshes with the first output gearwheel part (37),

-in the second rotational position (DL 2), the output gearwheel (17) directly meshes with a first gearwheel portion (39) of the respective additional gearwheel (20), and the second output gearwheel portion (38) of the reverse gearwheel (28) directly meshes with a second gearwheel portion (40) of the same or another additional gearwheel (20).

10. The actuating device of claim 8 or 9,

it is characterized in that the preparation method is characterized in that,

-the gear (16) has a worm drive (21) with a worm (22) in rotational connection with the input shaft (10),

-the input gearwheel portion (36) of the reversing gearwheel (28) directly meshes with the worm (22) in the first reversing position (WS 1) and the second reversing position (WS 2).

11. The actuating device of claim 1, wherein the actuating device,

it is characterized in that the preparation method is characterized in that,

-a rotational position sensor (34) is attached to the first housing part (4), which rotational position sensor determines the current rotational position of the input shaft (10).

12. The actuating device of claim 1, wherein the actuating device,

it is characterized in that the preparation method is characterized in that,

-a rotational position sensor (33) is attached to the second housing part (5), which rotational position sensor determines the current rotational position of the output shaft (11).

13. Actuating device according to claim 11 or 12,

it is characterized in that the preparation method is characterized in that,

-in the housing (2), power electronics (35) are arranged for the powering and starting of the electric motor (6), which are electrically coupled with the rotational position sensor (33, 34) and are accommodated in the same housing part (4, 5) as the rotational position sensor (33, 34).